Territory



' 2 sheet-sneet 1. T. MQGINNIS.

ORE ROASTI'NG FURNACE PatentedJaJn. 1811887.

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T. MOGINNIS.

ORE ROASTING FURNACE. No. 356,287. Patented Jan. 18, 1887.

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- UNITED STATES PATENT OFFIC TERRY MOGINNIS, OF ANAOONDA, MONTANA TERRITORY.

ORE-ROASTING FURNACE.

SPECIFICATION forming part of Letters Patent No. 356,287, dated January 18, 185.7.

Application filed June 7, 1BE6. Serial No. 204,406. (No model.)

To all whom it may concern.-

Be it known that I, TERRY MoGINNIs, of Anaconda, county of Deer Lodge and Territory of Montana, have invented anImprovement in Ore-Roasting Furnaces; and Ihereby declare the following to be a full, clear, and

exact description of the same.

My invention consists in the details of condampers.

scribed, and specifically pointed out in the claims.

The object of my invention will appear hereinafter, in the course of the following description, in connection with the several improve ments.

Referring to the accompanying drawings, Figure l is a part'longitudinal section and part side elevation of my furnace. Fig. 2is a plan of same, the front part of the arch being omit-.

ted, in order to show the divided grates.

A is the shell of the furnace, having within it the orechambcr B, of which bis the hearth or floor. V

O is the fire-box, and D is the bridgewall, of the furnace.

E are the heat and flame directing plates or These are'letv through the top or arch of the shell and extend downwardly into the ore-chamber. They may be stationary, though I prefer to give them a vertical adjustment, which may be effected in any suitable manner. racks e on the plates, with which pinions eon the crank-shafts e" engage.

F is a dividing-wall or partition within the fire-box and separating the grates c of said box. This partition at each end is firmly secured by being let into the bridge-wall and the end wall of the shell, and it is held down by a rod or anchor, G, which passes down through the brick-work of the shell, and is secured properly underneath.

H is a door-opening in the side of the shell and affording access to the ore-hearth. There may be as many of these openings as is necessary.

I is a plate 01' a gas-pipe frame, which is secured upon a shaft, 1 mounted and pivoted in bearings t" on each side of the door-opening H, whereby said plate or frame is adapted to be turned up into the door-opening, or toswing I have here shown for this purpose down on the outside of the furnace-shell below the said opening. In the top of this plate or frame is swiveled a forked bearing, J.

K are draft-apertures through the end wall of the shell for supplying air under the grates of the fire-box. V

L are apertures in the end wall, near its top, and passing through the end arch of the shell and communicating with the upper portion of the fire-box, and in line with the entrance of the hearth over the bridge-wall.

The hearth b is divided transversely by the offsets or shoulders 1) into a series of floors rising in height to the back.

The object of the plates or dampers E is to properly direct the heat and flame upon the body of ore resting on the hearth. In the ordinary furnaces, where no such plates are used, the heat and flame, meeting with no barrier or check, pass along close to the roof or under side of the arch, thus leaving a space in the middle of the ore-chamber, which fills with cold air, constantly rushing in through the open doors, and this causes a great waste of time and fuel; but by the use of the plates or dampers E, which may or may not, as I have before explained, he adjustable, the heat and flame are directed downwardly upon the ore or pulp on the floor. These plates may be made of any suitable material, and may be as many in number as are necessary, according to the size and shape of the furnace. By having them vertically adjustable their position within the ore-chamber can be regulated, so that they may be introduced farther or be withdrawn to a greater extent, as may be determined during the operation. They may be adjusted in various ways, though I consider the means I have here shown as being simple and effective.

The object of the divisional wall or partition for the grates in the fire-box is to distribute the flame over the whole surface of the first floor.

upper ones, L, which go through the front arch, draw the flame into the ore-chamber effectively..

The object of the swinging plates or frames I is as follows: The present style of stirring the ore upon the hearth necessitates very severe labor, for the reason that the spades or blades in use weigh eighty-five or ninety pounds, and are very heavy to handle; but with the swinging plates or frames I this difficulty is entirely overcome. hen the stirring implements are inserted into the furnace, the plates or frames are swung up into the dooropenings,.and their forked bearings J sustain the weight of said implements, and also give an increased leverage, while the swiveling character of the bearing enables the implements to have as great a sweep as may be desired.

In some classes of ore-furnaces inwardlyprojecting flanges or ribs are formed within the rotating crecha-mbers, and vertically-adjustable dampers cutting off the fire from the ore during the introduction of the latter into the furnace are known; but it will be seen that these are not similar to my heat and flame directing plates. N or do those plates, usually termed deflecting plates, and which are used in a roller-furnace, answer the purpose of my said plates, as they are more in the nature of permanent division-walls. The means I have described for adjusting the plates E are simple and effective, and are practical in furnace construction.

I am aware that in some cases a bearing is provided for the stirring implements, but not Ofthe character of my forked bearings J, which sustain the weight of the implement and allow it to be turned to any angle with facility.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an ore-furnace, the shell A, having an ore-chamber and a firebox at one end, in combination with two or more vertical plates, E, let through the top of the shell into the orechamber, and means for adjusting the plates, substantially as herein described.

2. In an ore-furnace, the shell A, having an ore-chamber and a fire-box at one end, in com-- bination with the plates E, let through the top of the shell into the ore-chamber, and the mechanism forvertioally adjusting said plates, consisting of the racks e on the plates, the crank-shafts c and the pinions e on said shafts engaging the racks, substantially as herein described.

3. In an oi'erfui'naee, the shell A, the firebox (3 in said shell, and the bridge-wall D, in combination with the division-wall or partition F, separating the grates of the firebox, said wall being let into the end wall of the furnace and into thebridge-wall, and the anchorrod G, passing down through the brick-work of the shell and secured below, substantially as described.

4. In an ore-furnace, the shell A, having an ore'chamber, I3, and hearth b, and the vertically adjustable heat and flame directing plates 11, extending within the ore-chamber, in combination with the firebox C, the bridgewall D, the division-wall or partition F of the fire-box grates, the lower apertures, K, in the end wall of the shell communicating with the fire-box under the grates, and the upper apertures, L, through the end wall of the shell and the end arch, and communicating with the top of the fire-box and the entrance to the ore-chamber, substantially as described.

5. In an ore-furnace, the dooropenings II TERRY MCGINN IS.

\Vitnesses:

LOUIS TERRY, E. B. \VATERBURY. 

